--Did you borrow the book from the library ? ---Yes. I _______ it for three days. I’ll return it this afternoon.

While Mary ___ a letter, the children were playing outside.

31. It’s two weeks since we _______ the work in Beijing Ren’ai Education Institute .

John　likes　playing　soccer　very　much　and　he　_____　about　one　hour　playing　it　every　day.

Mr. Green ____________ to the manager now. You’d better call him later.